Move all flags to CompilerOptions (first step to stop passing the compiler to

tests/compiler/dart2js/field_type_simple_inferer_test.dart

Index: tests/compiler/dart2js/field_type_simple_inferer_test.dart
diff --git a/tests/compiler/dart2js/field_type_simple_inferer_test.dart b/tests/compiler/dart2js/field_type_simple_inferer_test.dart
index 7eeb5f9e36fc77d40d08d7f3b85f346adef81468..534a7edaf7efbc0e6c11388f1c8e9b0b9f29e890 100644
--- a/tests/compiler/dart2js/field_type_simple_inferer_test.dart
+++ b/tests/compiler/dart2js/field_type_simple_inferer_test.dart
@@ -16,9 +16,9 @@ void compileAndFind(String code,
                     bool disableInlining,
                     check(compiler, element)) {
   Uri uri = new Uri(scheme: 'source');
-  var compiler = compilerFor(code, uri);
+  var compiler = compilerFor(code, uri,
+      disableInlining: disableInlining);
   asyncTest(() => compiler.run(uri).then((_) {
-    compiler.disableInlining = disableInlining;
     var cls = findElement(compiler, className);
     var member = cls.lookupMember(memberName);
     check(compiler, member);